<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>请求参数</title>
</head>
<body>
<form action="/proDetail">
    查看商品：
    <select name="userid">
<!--        要与数据库保持一致name="userid"，value="1"都要跟数据库的id相同和value数值相同-->
        <option value="1">小米</option>
         <option value="2">华为</option>
    </select>
    <br/>
    <input type="submit" value="确定"/>
</form>
</body>
</html>